sooo Trundle...

? trundle doesnt need gap closers when he has 500 mvoement speed as he runs towards you with pillar.

Really? That honestly surprises me. I thought Trundle couldn't handle being constantly bursted down with Riven's stun and knockup and stuff. Sure, Trundle sustains a bit, but as long as they don't try to out auto each other, Riven should win. Alright then, Ekko, Jax, Garen, Lissandra, Ryze, Ezreal, Graves, Xerath, Ziggs, Olaf, Yi, Irelia (maybe?), Tryndamere, and a few others might be good picks. Are you seeing a pattern here? These are all people with a lot of range, mobility, or straight up dueling potential. Now that I have finished being snarky, Trundle has sustain, yes, and his q raises his ad and lowers his opponents, yes, but to use those (and to make proper use of his attack speed buff), he will need to use mana. Trundle can go OoM very easily, so poke him down to make him try and use his Frozen Domain (it will increase his movement and attack speeds, but also increases his sustain). Try to never fight him in his Frozen Domain. He is very likely to win there. Only a few can out duel him here, and those are the characters that often win duels. Jax ignores his autos, stuns Trundle, and then proceeds to whack him with the lamppost faster and faster. Olaf has his true damage, attack speed and lifesteal boost, slow ignore and bonus stat ult, and his passive that increases his attack speed when he has less health. Yi is Yi. Irelia, well, I'm not sure of, but her stun/slow button, with her natural lifesteal, ranged ult, and natural tenacity SHOULD make her difficult for Trundle....not sure though. Trynd has his "you instantly lose 90 AD" button, along with natural sustain as well. But since you already looked up stats on Trundle to try and disprove me, maybe you should just look up how to deal with Trundle in a guide or something.